1. Quit Photoshop 2. Navigate to Photoshop's Preferences folder. macOS: Users/[user name]/Library/Preferences/Adobe Photoshop [version] Settings Windows: Users/[user name]/AppData/Roaming/Adobe/Adobe Photoshop [version]/Adobe Photoshop [version] Settings 3. Remove the file called MachinePrefs.psp from inside the settings folder and move it to your desktop If that fixes the issue, please share the MachinePrefs.psp file with Adobe if asked to do so.
The path for MachinePrefs.psp, on my Mac, is: /Users/~/Library/Preferences/Adobe Photoshop 20XX* Settings * specific to the version(s) of Photoshop you have installed.
Author “Color Management for Photographers" & "Photoshop CC Color Management/pluralsight"